package src.com.qf.utils;

import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Util {
    public static String getMD5(String str){
        byte[] secretBytes = null;
        try {
            secretBytes = MessageDigest.getInstance("md5").digest(
                str.getBytes());
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("没有这个md5算法");
        }
        String md5code = new BigInteger(1,secretBytes).toString(16);
        for (int i = 0; i <32 - md5code.length();i++){
            md5code = "0" + md5code;
        }
        return md5code;
    }
}
